TMS320DM335 datasheet(31/158 Pages) TI

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2.4.10 I

2C Interface

2.4.11 Serial Interface

TMS320DM335

Digital Media System-on-Chip (DMSoC)

www.ti.com

SPRS528A – JULY 2008 – REVISED AUGUST 2008

Table 2-15. UART Terminal Functions (continued)

TERMINAL

TYPE(1)

OTHER(2)(3)

DESCRIPTION

NAME

NO.

MMCSD1_DA

MMCSD1: DATA0

TA0/

A18

I/O/Z

VDD

GIO: GIO019

GIO019/

UART2: TXD

UART2_TXD

The DM335 includes an I2C two-wire serial interface for control of external peripherals. This interface is

multiplexed with GIO signals.

Table 2-16. I2C Terminal Functions

TERMINAL

TYPE(1)

OTHER(2)(3)

DESCRIPTION

NAME

NO.

I2C_SDA/

I2C: Serial data

R13

I/O/Z

VDD

GIO015

GIO: GIO015

I2C_SCL/

I2C: Serial clock

R14

I/O/Z

VDD

GIO014

GIO: GIO014

(1)

I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal.

(2)

Specifies the operating I/O supply voltage for each signal. See Section 5.3, Power Supplies for more detail.

(3)

PD = pull-down, PU = pull-up. (To pull up a signal to the opposite supply rail, a 1 k

Ω resistor should be used.)

The DM335 includes three independent serial ports. These interfaces are multiplexed with GIO and other

signals.

Table 2-17. SPI Terminal Functions

TERMINAL

TYPE(1)

OTHER(2)(3) DESCRIPTION

NAME

NO.

SPI0_SCLK

C12

I/O/Z

VDD

SPI0: Clock

SPI0_SDENA[0]/

SPI0: Chip select 0

B12

I/O/Z

VDD

GIO103

GIO: GIO[103]

GIO007

GIO: GIO[007]

C17

I/O/Z

VDD

SPI0_SDENA[1]

SPI0: Chip select 1

SPI0_SDI/

SPI0: Data in

A12

I/O/Z

VDD

GIO102

GIO: GIO[102]

SPI0_SDO

B11

I/O/Z

VDD

SPI0: Data out

SPI1_SCLK/

SPI1: Clock

C13

I/O/Z

VDD

GIO010

GIO: GIO[010]

SPI1: Chip select 0

SPI1_SDENA[0]/

E13

I/O/Z

VDD

GIO: GIO[011] - Active low during MMC/SD boot (can be used as

GIO011

MMC/SD power control)

SPI1_SDI/

SPI1: Data in or

GIO009/

A13

I/O/Z

VDD

SPI1: Chip select 1

SPI1_SDENA[1]

GIO: GIO[09]

SPI1_SDO/

SPI1: Data out

E12

I/O/Z

VDD

GIO008

GIO: GIO[008]

(1)

I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal.

(2)

Specifies the operating I/O supply voltage for each signal. See Section 5.3, Power Supplies for more detail.

(3)

PD = pull-down, PU = pull-up. (To pull up a signal to the opposite supply rail, a 1 k

Ω resistor should be used.)

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